Improvement in shutter-fasteners



PATENT OFFICE.

NIOHOLAS H. BYERLEY, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN SHUTTER-FASTENERS.

Specification forming part of Letters Patent N0. 135,319, dated January 28, 1873.

T0 all whom it mag; concern:

Be ita known that I, NIGHOLAS H. BYERLEY, of the city and county 0f Philadelphia and. State of Pennsylvania, have invented an Improved Shutter-Fastener, 0f which the foliowing is a, specification:

The invention relates t0 a shutter-fastener; and consists in a spiral 0r coil spring of brass 0r other wire; the ends of the lengths or arms are looped 0r hooked 130 take into the rings of the window-shutter; and. a graduating or tightening ring embraees the arms t0 contraet the extension of the same.

Figure 1 shows the fastener in plaee on the rings 0f a pair of windw-shutters. Fig. 2 is an end view of the fastener.

A is a spiral spring of any number of coiis. B are its arrns, which cross each other and terminate in the 100ps or hooks O. D is a tightening .and ad justing ring on the arrns of the Spring.

As shown in Fig. l, the loops 0 take into the rings E 0f the shutters F, and keep them from opening 0r spreading in hig'h Winds; the creaking of the shutters is prevented by the yielding of the spring, which gives suffieiently t0 accommodate to any strains.

When it.is desirable t0 bring the shutters closer together than shown ab Fig. l, the ring D is slipped over one of the hooks U, as shown ab a b, dotted lines; to bring them still closer together the ring 1nust be pur over both hooks, as shown ab a c, dotted lines.

I c1aim as my invent-ion The spiral spring A, Witl1 its arrns B und loops 0r hooks O, in combination with the tighteningming D, substantially fo r tha purpose shown and described.

In testimony whereof I hereunto sign my name in presence 0f two subsoribing witnasses.

NIOHOLAS H. BYERLEY.

Witnesses:

FRANCIS D. PAS'IORIUS, EDMUND P. OOOHRAN. 

